Invention Grant
- Patent Title: Adjustment of drop rate of elevator car with electromagnetic brake system
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Application No.: US16925945Application Date: 2020-07-10
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Publication No.: US11897725B2Publication Date: 2024-02-13
- Inventor: Steven M. Millett , Ismail Agirman , Amir Lotfi
- Applicant: Otis Elevator Company
- Applicant Address: US CT Farmington
- Assignee: OTIS ELEVATOR COMPANY
- Current Assignee: OTIS ELEVATOR COMPANY
- Current Assignee Address: US CT Farmington
- Agency: CANTOR COLBURN LLP
- Main IPC: B66B1/26
- IPC: B66B1/26 ; B66B5/02 ; B66B1/32 ; B66B11/04
Abstract:
A braking system for an elevator includes an electromagnetic brake operably connected to an elevator car, and a control circuit operably connected to the electromagnetic brake. The control circuit includes a switching mechanism configured to selectively modify a rate of engagement of the electromagnetic brake to selectively modify a rate of deceleration of the elevator car. The switching mechanism has a first position, a second position and a third position, to selectively modify the rate of engagement.
Public/Granted literature
- US20200339382A1 ADJUSTMENT OF DROP RATE OF ELEVATOR CAR WITH ELECTROMAGNETIC BRAKE SYSTEM Public/Granted day:2020-10-29
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